The SciencesMay 3, 1919
Radio Telephony—III
A Final Survey of the Problems Solved and the Future Rôle of Wireless Speech
Stories by E. H. Colpitts
The SciencesApril 26, 1919
Radio Telephony—II
Naval and Airplane Installations Developed During the War
The SciencesApril 19, 1919
Radio Telephony—I
The Beginnings of Long-Distance Wireless Transmission of Speech
TechnologyDecember 4, 1915
The Future of Radio Telephony
Significance of the Recent Achievement in Long Distance Radio-Transmission of Speech